Correct Answer: (a) 2 and 4
Note: Guru Arjan Dev and Guru Tegh Bahadur were awarded death sentence by their contemporary rulers, Jahangir and Aurangzeb respectively.
Guru Arjan Dev (1581-1606 A.D.) - He was the 5 Sikh Guru. After the revolt against Jahangir, his rebellious son Prince Khusrau fled from Agra to Afghanistan. During his escape Khusrau met Guru Arjun Dev at Taran Taran city. Guru gave him support and shelter due to which Jahangir got angry with Guru Arjan Dev. Jahangir accused him of conspiracy and sentenced him to death sentence in 1606. Guru Arjan Dev established Taran Taran and Kartarpur towns. His major work was a compilation of Guru Granth Sahib.
Guru Tegh Bahadur (1664-1675 A.D.) - Revered as the ninth Nanak, he was the ninth of ten Gurus of the Sikh religion. According to the records written by his son Guru Gobind Singh, the Guru had resisted persecution, adopted and promised to protect Kashmiri Hindus. The Guru was summoned to Delhi by Aurangzeb on the protest but when he arrived, he was offered "to abandon his faith and convert to Islam." Guru Tegh Bahadur refused, he and his associates were arrested. He was executed on November, 1675 before the public in Chandni Chowk, Delhi.